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My Kef R900's are biwireable and noticed the twin outputs on the back of the JC1 - would this configuration Improve the sound anymore or is it just a Gimmick?

There is a large thread (142 replies) discussing the merits of biwiring at the Speaker Asylum, including technical analyses of why it should be efficacious. Of course there are those who claim it's a gimmick. I use a pair of Clear Day Double Shotgun cables to each of my KEF 107/2s, and the double speaker lugs on the JC 1 makes that easy. But then I've never tried the 107/2s in other than a biwired mode. For reasons I've yet to explore, biwiring to my KF R600C seems to attenuate the HF, leading me to wonder if the control (seen as a knob) that sets the speaker into single wire or biwire mode might be defective or whether I'm just not setting it correctly. For now, the center speaker is connected with a pair of Shotguns, but the knob is turned to single wire. Before spending a lot on cables, you might try 4 strands of heavy gauge zip cord -- you don't need spades or bananas.

There is a large thread (142 replies) discussing the merits of biwiring at the Speaker Asylum, including technical analyses of why it should be efficacious. Of course there are those who claim it's a gimmick. I use a pair of Clear Day Double Shotgun cables to each of my KEF 107/2s, and the double speaker lugs on the JC 1 makes that easy. But then I've never tried the 107/2s in other than a biwired mode. For reasons I've yet to explore, biwiring to my KF R600C seems to attenuate the HF, leading me to wonder if the control (seen as a knob) that sets the speaker into single wire or biwire mode might be defective or whether I'm just not setting it correctly. For now, the center speaker is connected with a pair of Shotguns, but the knob is turned to single wire. Before spending a lot on cables, you might try 4 strands of heavy gauge zip cord -- you don't need spades or bananas.

db

I will have a go at this and report back - I actually have some biwire cables somewhere

I've been using a Proceed Amp 2 to drive a pair of LS50s in a simple setup in which the source is an Oppo 95. I tried an A23 in this setup, prefer the sound with the Amp 2, but the audio trigger of Parasound amps is appealing -- I too often forget to turn the Amp 2 to standby. I suspect an A21 might even sound superior to the Amp 2 and provide the audio trigger. Are A21 owners generally pleased with them?

I''ve heard that the one weakness for the LS50 can be brightness for some people. I've got the Opp 95, and it can be bright as well, so I'm betting the Proceed amp has a warmer sound. I've also got the A21 and its a gem of an amp. It would reach the limits of the LS50's pretty quickly if you wanted to crank it up, but you're probably aware of that!

I''ve heard that the one weakness for the LS50 can be brightness for some people. I've got the Opp 95, and it can be bright as well, so I'm betting the Proceed amp has a warmer sound. I've also got the A21 and its a gem of an amp. It would reach the limits of the LS50's pretty quickly if you wanted to crank it up, but you're probably aware of that!

I listen at moderate levels. The KEF 107/2s have a sensitivity rating of 90 dB, but the 800 watts/channel JC 1s make them sing in a way the 400 watts/channel Proceed HPA 3 (three monoblock Levinson amps in an industrial case) doesn't. Both sound very good with the 107/2s, but the JC 1s sound better and provide substantially more LF extension, e.g. pedal notes of pipe organs pour forth with greater authority. I was surprised. So it's not just watts are watts, to use the bit analogy.

Re the LS50s: I've let aesthetics drive placement of the speakers which I suspect is now less than ideal. When we rearrange the living room, the speakers may be on a wall along with a 70" wall-mounted monitor, in which case I can attend to their placement for sound as well as aesthetics.